ASA General: Weight and Balance

What tasks are completed prior to weighing an aircraft to determine its empty weight ?

Remove all items except those on the aircraft equipment list; drain fuel and fill hydraulic fluid

What is meant by the term residual fuel ?

The fuel remaining in the tanks, lines, and engine after draining

The useful load of an aircraft consists of the?

crew, usable fuel, passengers, and cargo

In the theory of weight and balance, what is the name of the distance from the fulcrum to an object?

lever arm

What type of measurement is used to designate the arm in weight and balance computation ?

Distance

Maximum zero fuel weight is the?

Maximum permissible weight of a loaded aircraft (passengers,crew,cargo) without fuel

When dealing with weight and balance of an aircraft, maximum weight is interpreted to mean the maximum ?

Authorized weight of the aircraft and its contents

The useful load of an aircraft is the difference between?

the maximum takeoff weight and basic empty weight

When determining the empty weight of an aircraft, certificated under current airworthiness standards, the oil contained in the supply tanks is considered?

a part of the empty weight

In a balance computation of an aircraft from which an item located aft of the datum was removed, use?

-weight * +arm = -moment

When accomplishing loading computations for a small aircraft, necessary information obtained from the weight and balance records would include?

Current empty weight and empty weight CG

An aircraft LEMAC and TEMAC are defined in terms of distance ?

From the datum

If an aircraft CG is found to be at 24 percent of MAC, that 24 percent is an expression of the?

Distance from the LEMAC

To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed?

in a level flight attitude

Which of the following can provide the empty weight of an aircraft if the aircrafts weight and balance records become lost, destroyed, or otherwise inaccurate?

Reweighing the aircraft

When calculating the new weight and balance for an aircraft, what is used to determine the operating CG range ?

The Type Certificate Data Sheets

In the process of weighing an airplane towards obtaining the CG, the arms from the weighing points always extend ?

parallel to the centerline of the airplane

Which of the following have an effect on aircraft CG results when conducting a weight and balance check?

Leaving the down locks installed

Which of the following may cause erroneous scale readings?

Parking brakes set

Which of the following statements is true ?

Private aircraft are not required by regulations to be weighed periodically

What FAA approved document gives the leveling means to be used when weighing an aircraft?

Type certificate Data sheet

Which devices are used to obtain the greatest accuracy of aircraft leveling?

Spirit level

Which statement is true regarding helicopter weight and balance?

Weight a nd balance procedures for airplanes also apply to helicopters

The amount of fuel used for computing empty weight and corresponding CG is?

unusable fuel

What determines whether the value of a moment is preceded by a plus or a minus sign in aircraft weight and balance?

The location of the weight relative to the datum and if it is being removed or added

If the reference datum line is placed at the nose of an airplane rather than at the firewall or some other location aft the nose?

all measurement arms will be positive numbers

If a 40 pound generator applies +1400 inch pounds to a reference axis, the generator is located? 1400/40

+35

The max weight of an aircraft is the ?

empty weight plus useful load

What should be clearly indicated on the aircraft weighing form?

weighing points

If it is necessary to weigh an aircraft with full fuel tanks, all fuel weight must be subtracted from the scale readings ?

Except unusable fuel

The empty weight of an airplane is determined by?

Subtracting the tare weight from the scale reading and adding the weight of each weighing point

Most modern aircraft are designed so that if all seats are occupied, full baggage weight is carried, and all fuel tanks are full, what will be the weight condition of the aircraft?

it will be in excess of maximum takeoff weight

The major source of weight change for most aircraft as they age is caused by?

Repairs and alterations

The Max weight as used in weight and balance control of a given aircraft can normally be found ?

In the aircraft specifications or TCDS

When computing weight and balance, an airplane is considered to be in balance when?

the average moment arm of the loaded airplane falls within its CG range

The CG range in single rotor helicopters is?

more restricted than on airplanes

All other things being equal, if an item of useful load located aft of an aircrafts CG is removed, the aircrafts CG change will be?

Forward in proportion to the weight of the item and its location in the aircraft

Improper loading of a helicopter which results in exceeding either the fore or aft CG limits is hazardous due to the?

reduction or loss of effective cyclic pitch control

When making a rearward weight and balance check to determine that the CG will not exceed the rearward limit during extreme conditions, the items of useful load which should be computed at their min weight are those located forward of the ?

rearward CG limit

If the empty weight CG of an airplane lies within the empty weight CG limits?

It is not necessary to calculate the CG location at gross weight

Which should be accomplished before jacking an aircraft?

Install critcal stress panels or plates

Why is it generally necessary to jack an aircraft indoors for weighing?

So the aircraft current does not destabilize the scales